Do you know that the connections in your brain grow no matter what age you are? The really amazing thing is that you can choose to strengthen connections that lead to your success in anything. Have you heard the phrase, "Practice makes perfect"?
This is a phrase so often repeated that we just accept that it is true, but what is really true is "Practice makes permanent." If what you are practicing is a correct golf swing, then, "Practice makes perfect." However, if you are practicing an incorrect golf swing, then, it will not help your golf game.
The really amazing thing is that you can change your results by changing your thoughts through practice - yes your thoughts create those neural pathways similar to the way physical practice does.